<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索和添加按钮区域 -->
      <el-row :gutter="20">
        <!-- 搜索框区域 -->
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <!-- 添加用户按钮区域 -->
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <!-- 作用域插槽 -->
          <template slot-scope="scope">
            <el-switch @change="userStatusChaged(scope.row)" v-model="scope.row.mg_state"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="190px">
          <template slot-scope="scope">
          <!--修改按钮-->
            <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"></el-button>
         <!--删除按钮-->
            <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeUserById(scope.row.id)"></el-button>
         <!--分配角色按钮-->
            <el-tooltip :enterable="false" class="item" effect="dark" content="角色分配" placement="top">
              <el-button size="mini" type="warning" icon="el-icon-setting"  @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
          </el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose">
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" class="demo-ruleForm">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!--修改用户对话框-->
      <el-dialog
   title="修改用户"
   :visible.sync="editDialogVisible"
   width="50%" @close="editDialogColsed">
   <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
    <el-form-item label="用户名" prop="username" >
       <el-input v-model="editForm.username" disabled></el-input>
     </el-form-item>
  <el-form-item label="邮箱" prop="email">
 <el-input v-model="editForm.email"></el-input>
 </el-form-item>
 <el-form-item label="手机号" prop="mobile">
   <el-input v-model="editForm.mobile"></el-input>
 </el-form-item>
 </el-form>
  <span slot="footer" class="dialog-footer">
  <el-button @click="editDialogVisible = false">取 消</el-button>
   <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>

 </el-dialog>
 <!-- 分配角色对话框 -->
 <el-dialog
   title="分配角色"
   :visible.sync="setRoleDialogVisible"
   width="50%" @close="setRoleDialogClosed">
   <div>
      <p>当前的用户：{{userInfo.username}}</p>
      <p>当前的角色：{{userInfo.role_name}}</p>
      <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
             <el-option
               v-for="item in roleList"
               :key="item.id"
               :label="item.roleName"
               :value="item.id">
             </el-option>
           </el-select>
     </p>
   </div>

   <span slot="footer" class="dialog-footer">
     <el-button @click="setRoleDialogVisible = false">取 消</el-button>
     <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
   </span>
 </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    // 验证邮箱的规则
    var checkEmail = (rules, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的规则
    var checkMobile = (rules, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        // 合法的手机号
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表参数
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      // 用户列表数据
      userList: [],
      // 总条数
      total: 0,
      // 控制添加用户对话框的显示和隐藏
      addDialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '用户名长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 18, message: '密码长度在 6 到 18 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { type: 'email', message: '请输入正确的邮箱地址', trigger: 'blue' },
          { validator: checkEmail, trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: ['blur', 'change'] }
        ]
      },
      // 控制修改用户的对话框的显示与隐藏
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { type: 'email', message: '请输入正确的邮箱地址', trigger: 'blue' },
          { validator: checkEmail, trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: ['blur', 'change'] }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的信息
      userInfo: {},
      // 所有角色的数据列表
      roleList: [],
      // 已选中角色id值
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    // 获取用户列表数据
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听 pagesize 改变
    handleSizeChange (newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码时改变事件
    handleCurrentChange (newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听用户状态改变事件
    async userStatusChaged (userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('修改用户状态失败！')
      }
      this.$message.success('修改用户状态成功！')
    },
    addDialogClose () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return {}
        // 可以发起请求添加用户
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          return this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        // 重新获取用户列表
        this.getUserList()
        // 关闭添加用户对话框
        this.addDialogVisible = false
      })
    },
    // 展示修改用户的对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框关闭事件
    editDialogColsed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return {}
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })

        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        // 关闭修改用户对话框
        this.editDialogVisible = false
        // 刷新用户列表数据
        this.getUserList()
        this.$message.success('更新用户信息成功')
      })
    },
    // 根据用户id删除用户
    async removeUserById (id) {
      // console.log(id)
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // console.log(confirmResult)
      // 如果确定返回confirm 如果取消返回cancel
      if (confirmResult !== 'confim') {
        this.$message.info('您取消了本次删除')
      }
      console.log('确认删除')
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功！')
      this.getUserList()
    },
    // 展示分配角色对话框
    async setRole (userInfo) {
      this.userInfo = userInfo

      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.roleList = res.data

      this.setRoleDialogVisible = true
    },
    // 点击确定分配角色
    async  saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      // 发起请求保存用户本次操作
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this
          .selectedRoleId
      })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色信息失败！')
      }
      this.$message.success('更新角色信息成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }

  }
}
</script>

<style>
  .el-breadcrumb{
    padding-bottom: 15px;
    font-size: 12px;
  }
  .card{
    box-shadow: 0 1px 1px rgba(0,0,0,0.15)!important;
  }
  .el-table{
    margin-top: 15px;
  }
  .el-pagination{
    margin-top: 15px;
  }
</style>
